Hoisting-bucket.



A. E. NORRIS.

HOISTING BUCKET. APPLICATION PIL,ED DEG. 5,1906. nnmwnn SEPT. 29, 1910.

992,799. Patented May 23, 1911.-

5 SHEETS-SHEET 1.

6i m/ Q MQ W A. E. NORRIS. HOISTING BUCKET. APPLICATION I'I LED 1)}10. 5, 1906. RENEWED SEPT. 29, 1910.

- A. E. NORRIS. HOISTING BUCKET. n LmATIoN FILED 1230.5, 1906. RENEWED SEPT. 29, 1910. 992,799, Patented May 23,1911.

5 SHEETSSHEET 3.

A. B. NORRIS. HOISI ING BUCKET. 4 APPLIOATION FILED D120. 5, 1906. RENEWED 8112129, 1910. 992,799. Patented May 23, 1911.

UNITED ST TES PATENT OFFICE.

ALLISON E. NORRIS, OF CAMBRIDGE, MASSACHUSETTS.

norsrmsaocxn'r.

, To all whom it may concern:

Be itknown' that I, ALMoN E. Nonms, a

" citizen of the United States, residing at Cambridge, county of Middlesex, and State 5 of Massachusetts,-have invented an Improvement in Hoisting-Buckets, of which the followingdescription, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like QKPQIIS.

This invention'relates to hoistingbuckets,

i and has for its object toimprove this class of devices in the particulars hereinafter described and then more fully pointed out in the claims.

In the drawings, Figure 1 is a side view of a bucket embodying my invention; Fig. 2 is an end view thereof; Fig. 3 is a top plan View with the holding rope and openlngand-closing rope omitted; Fig. 4 is avertical section through the head and the sheaves therein; Fig. 5 is a vertical section through. the Weight showing ,one embodiment of my invention; Fi 6 is a sideview of a bucket showin anot erembodiment of myinvention; Fig. 7 is a section. on the line w, m, Fig. 1; Fig. 8 is a vertical section through the weight on the-line :y, Fig. 1; Fig. 9 is a plan yiew of the weight 91 with the cover and sheaves removed; Fig. 10 is a section'on the line aa, Fig. 8'; Fig. 11 is a transverse section through the shaft 5.

The bucket herein shown comprises the usual bucket segments 3 and 4 which are pivotally connected to the weight 91, and

which have pivotally connected to the cor- 11ers thereof the lower ends of the links 6, .-.t he upper ends of which links are pivoted to "the head. The head of the bucket is desig- "therein a pivotal pin 8 on which are journaled'th'e threesheaves 9, 10 and 11. Theholding rope 13, instead of having one end fastened directly to the head as is sometimes fibucket is supported, and after passing around the central sheave 10, said holding rope will-be led-to and wound about a drum of the engine.

opening-and-closing rope, which is Specification of Letters Patent. Application filed December 5,1906, serial No. 346,380. Renewed September 29, 1910. Serial No. 584,575. a;

nated generally by 7, and it has mounted *d'one,,is carried-around the central sheave 10. ]..so.that" the'sa1d sheave is supported in a PatentedjMay 23, 1911.

designated by 14, is assedaround the two sheaves 9 and 11 an also is wound about other sheaves 2 journaled on the shaft 5, which is supported by the weight 91. Pref-- erably the sheaves 9, 10 and 11 in the head will have such an angular relation to the sheaves 2 carried by the shaft 5 that the rope will run freely around said sheaves.

In using buckets of this type, when it is.

desired to open the bucket, saidfbucket is suspended by the holding rope 13 and the opening-and-closing rope is slackened, thus allowin theweight 91 to descend and cause the buc et segments to 0 en, To close the,

bucket, the opening-an -closing rope is.

tightened, thus lifting the weight and clos ing the bucket segments. During the open ing and closing movements of the bucket, the .central' sheave 10 around which the holding rope passes is stationary, while the outside sheaves 9 and-11 rotate as the opening-and-closing rope is drawn in or paid out. -When the bucket .is being carried from one end of the track or boom to the other, or

is being raised or lowered, all the sheaves 9, 10 and 11 will be rotating' in unison. In order to minimize the wear which occurs between the sheaves in the head and the bearings therefor, Ifwill preferably construct the central sheave 10 with the elon gated hub 12 on which the two outside sheaves 9 and 'll'are loosely mounted, as best seen in Fig. 4, the hub 12 of the central sheave being loosely journaled on the pivotal pin 8. With this construction, it will 'be seen that when the bucket segments are beingopened or closed, the hub -12will be stationary n-the pivotal pin 8, and the only. place where weaf willoccur will be on the bearing surfaces between the sheaves 9 and 11 and the hub 12 and that when the bucket is traveling along the track, or is being,

raised or lowered, the only-bearing surfaces moving relative to each other are the beari-ng surfaces between the hub 12 and the pin 8. The long hub 12 practically gives to the outside sheaves 9 and 11' a long bearing'on the pivotal pin 8, andwitli this construction the wear at the bearings of the sheaves in the tained by the opening-and-closing rope, and

the two sheaves!) and 11. the open11 1g-and-closing rope, however, is

two-thirds of the weight-will be sustained by the holding rope. When this is the con-- dition, two-thirds of the weight'ofthe bucket is taken by-the sheave l'and one-third by The strain on" equal throughout its entire extent so that substantially one-sixth of the weight of the bucket, whether loaded or unloaded, is sustained by each run of-said rope between the sheaves in the head and those in the weight. The two portions of the rope which pass over each of the sheaves 9 and 11, therefore, sustains one-third of the weight, and

The downward pull on the outside sheaves,

therefore, will counterbalance the upward pull on the central-sheave and as a result approximately 110 strain will come on the pivotal pin 8. All binding or cramping of the sheaves is thus avoided, and the wear reduced'to a minimum.

Both the opening-and-closing rope and the holding rope extend through apertures in the head 7 as usual.

The bucket herein shown 'is one in which ropes instead of chains are used for opening and closing or for hoisting the bucket. If the ropes thus used are made of-wire it is desirable that they should be prevented from being bent too sharply during the op eration of the bucket; in fact it is desirable that these ropes should not under any circumstances be bent into a curve of a less radlus than they are bent in'passlng over the sheaves. To prevent any sharpbending of either of the ropes after passing through the head, I have provided thehead with leaders or guides 15 which are made with flaring mouths, as best seen in Fig. 1, and

the inside curvature of each leader is substantially the same as the curvature of the rope-receiving portions of the sheaves. With this construction, the leaders prevent the rope from making any sharp bend as it passes out from the aperture in the head and thus prevents injury to the rope from this cause.

In clam-shell buckets of this type as now commonly constructed, the bucket structure is apt to collapse andthe head thereof to become twisted and thrown out of position,

when the bucket is dropped into the material which is to be excavated preparatory to closing the bucket. This is especially true where the head is supported in.the bight of the holding rope so that the point of sus-' pension is below the point where the links are pivoted to the head. In order to avoid heea'zee this disadvantage and to provide a bucket in which'the parts. and especially the head will alwaysmaintain their proper os1t1on under all circumstances, I have, in t is embodiment of my, invention so connected the upper ends of the links on each side of the head that they will serve to malntaln the head in its correct vertical position. In the embodiment of the invention herein shown this end is accomplished by providing the two'links on each side of the head with arms or extensions 22 which have an intermeshing engagement with each other. These arms or extensions are rigid with the links and preferably integral therewith, eachlink being bent inwardly at its upper end, as best seen in Figs. 1 and'fi. These arms are pro-.

-is that-the'head 7 is always maintained in its correct vertical position.

It frequently happens that during the use of buckets of this type the sheaves 2 carried by the weight become choked with the material being handled. To avoid this I have in my present invention entirely 1ncased these sheavesby providing a cover or closure 18 which is preferably detachably secured to the weight 91. This cover 18 is provided with apertures 19 through which the various runs of the opening-and-closingv rope 14 pass, and it obviously prevents any of the material being handled from intere fering in any way with the operation of the sheaves 2.

In those types of buckets in which the weight is sustained at each end upon the pivotal pinto which the arms of the bucket are fastened, such for instance as illustrated in Patent No. 699,343, May 6, 1902, the weight often becomes twisted orturns on its pivotal pin to such an extent as to cause the opening-and-closing rope to chafe on. the weight. This is especially true where' the sheaves are covered in as shown in the accompanying drawings? In my improved bucket, herein illustrated, I have provided for maintaining the weight 91 always in'its true vertical position, thus preventing it from turning sufficiently to chafe or wear the opening-and-closing rope. I have illustrated two ways in which this may be accomplished. In Fig. 1 the two arms 89 and 90 of the bucket segments are pivoted to the weight to turn about different axes and are geared together so that it will be impossible for the weight to swing or turn about a horizontal axis. In this embodiment of my invention, the weight 91 has extended from each end thereof two studs or trunnions 87, 88 to which the arms 89 and 90 are pivoted,

and each of said arms is provided with gear teeth 86, the gear teeth of adjacent arms meshing, as best seen in Fig.1. I prefer to form these gear teeth 86 on bearing memsuitable way, as by a bolt 83. In this con' struction since the weight 91 is supported at two points at each end, and since the two arms 89, 90, are geared together it will be impossible for the weight to be thrown out of its true perpendicular position. The trunnions 87, 88 are preferably detachably secured to the weight so that by simply removing them either or bothbucket segments can be readily removed. As herein shown each trunnion is provided with" a head 75 i and is loosely received in a recess 7 6- in the I end of the weight, e'achtru'nnion being held in place by means of a bolt 74 which extends transversely through the shank of the trunnion. By simply removing" the bolt 74: the corresponding trunnion may be removed and in this way the removing of any bucket segment is a simple matter. 1

In Figs. 5 and 6' I-have shown an embodiment of my invention in" which the weight 91' is prevented from twisting by means of guide sheaves 20 which are carried by the cover 18 and which are situated adjacent each of the apertures 19. These guide pulleys by bearing against the runs of the rope 14 serve to maintain the proper position of the weight 91. p

The shaft 5 on which the sheaves 2' are supported preferably has connected thereto at each end an oil duct or oil' cup which extends upwardlythrough an aperture 71 in the top of the weight, as seen in Fig. 8,

and said shaft may be provided with a longitudinal bore provided with oil ducts which lead to the sheaves. The sheaves may thus be readily oiled by simply introducing oil into either or both of the oil ducts or cups'70. The weight is provided with the chamber 69 in which the sheaves 2 are received, and the ends of the weight have the cross sectionalshape shown in Fig. 10. If it is desired to remove any one of the sheaves 2 the oil cups 7 0 may be disconnected from the shaft 5 and the latter may then be slipped endwise sufliciently to withdraw it from the sheave desired to be removed, when said sheave may be readily removed by taking off the cover 18. The shaft 5 is preferably held from rotary movementby means of a dutchman 68, which may be removably sustained by the shaft.

A bucket having the above construction is one which will hold its 'shapeunder all circumstances, even when it is dropped into the material bemg excavated. Moreover, I

have found that by pivoting the bucket seg ments to the weight, as shown in Fig. 1, the bucket has a wider reach and the weight. 91

stands at a higher level when.- the bucket is open than with the construction such as shown in Fig. 6 where the two arms of the bucket are pivoted to turn about the same axis. I My invention, however, is notlimited to the precise details herein shown.

Having described my invention what I claim as new and desire to secure by Letters Patent is v 1. In a bucket, the combination with two bucket segments, of a head to which said bucket segments are secured, three axially alined sheaves carried by the head, a holding rope passing around one sheave, and an opening-and-closing rope passing around the other sheaves. Y

2. In a'bucket, the combination of two bucket segments, of a head to whi'ch the.

bucket segments are secured,;said head carrying a pivotal pin, three sheaves sustained by said pin, a holding rope passin around rope passing around the other sheave. 3; In a bucket, the combination of two bucket segments, of a head to which-said bucket segments are secured, three axially alined sheaves sustained by saidjhead, two of the sheaves having bearing on the other sheave, a holding rope passing around one sheave, and an opening-and-closing rope passing around the other sheave.-

4. In a bucket, the combination of two bucket segments, of a head to which said bucket segments are secured, three axially alinedsheaves sustained by said head, a holding rope passing around one sheave,

and an opening-and-closing rope passing around the other sheaves, said'latter sheaves havlng bearing on the former sheave.

5. In a bucket, the comblnation w1th two ments are connected, a pivotal pin carrie by said head, a sheave for the holding rope one sheave, and an opening-an -closing bucket segments, of a head to which the sega mounted on said pin, and two sheaves for i the opening-and-closing rope mounted to turn on the hub of the first-named sheave. 6. In a bucket, 'the combination with two bucket segments, of a head to which said segments are secured, a pivotal pin carried by said head, a sheave loosely mounted on said pin and having extended hubs, a holding rope passing around said sheave, two other sheaves supported on the extended hubs of the first sheave, and an openingand-closing rope wound about said latter sheaves.

7. In a bucket, the combination with two bucket segments, of a sheave having ex-. tended hubs, a holding rope extended about said sheave, two other-sheaves mounted on the hubs of the first-named sheave, and an opening-and-closing rope passing over said last-mentioned sheaves.

8. In a bucket, the combination with two bucket segments, of a member to which said segments are pivotally connected, a head, sheaves carried by the head, other sheaves carried by said member, an opening'andclosing rope passing around said sheaves, and means to inclose the sheaves carried by said member.

9. In a bucket, the combination with two bucket segments, of a weighted member to which said segments 7 are pivoted, said weighted member having a sheave-receiving pocket, sheaves mounted in said pocket, and a cover or closure for the sheaves.

10. In a bucket, the combination with two bucket segments, of a weight to which said segments are pivoted, said weight having sheave-receiving pocket, sheaves mounted in said pocket, a cover or closure for the sheaves, said cover or closure having ropereceiving apertures, and an opening-andclosing rope passing around said sheaves and through the apertures.

11. In a bucket, the combination with two bucket segments, of a head, sheaves carried thereby, an opening-and-closing rope extending around said sheaves and through an aperture in the head, and a leader or guide for the rope carried by the head, said leader or guide having a flaring mouth, the curvature of which is substantially the same as that of the rope receiving portion of the sheave.

12. In a bucket, the combination with two bucket segments, of a head, links pivotally connecting the head and the bucket segments, and meansto maintain the head in itsvertical position at all times.

13. In a bucket, the combination with two bucket segments, of a head, links pivotally connecting the head with the bucket segments, a holding rope connected to the head, the point at which the head is suspended from the holding rope being below the point of connection between the links and the head, and means to maintain the head inits vertical position.

14. In a bucket, the combination with two bucket segments, of a head, and links connecting the head with the segments, the

links connected to one bucket segment having an intermeshing engagement with those connected to the other bucket segment.

15. In a bucket; the combination with two bucket segments, of a head, and links connecting the head with the upper rear corner ofeach segment, the links which are connected to one bucket segment having an intermeshing engagement. with those connected to the other bucket segment.

16. In a bucket, the combination with two bucket segments, ofa link pivoted to each bucket segment, and a head to which said links are also pivoted, the ends of the links which are pivoted to the head having an intermeshing engagement.

17. In a bucket of the clam-shell type, the combination with a sheave-receiving member, of two clam-shell bucket segments pivoted directly thereto, to turn aboutdifi'erent axes, and means to open and close said,

bucket segments.

18. In a bucket of the clam-shell type, the combination with a head, of a sheave-receiving member, two clam-shell bucket segments pivoted directly to the sheave-receiving member to turn about different axes, sheaves mounted in said sheave-receiving member, and an opening-and-closing rope passing around said sheaves.

19. In a bucket, the combination with two bucket segments, of a sheave-receiving memher to which said segments are pivotally connected, sheaves for the opening-and-closing rope carried by said member, and means to prevent said member from turning as the bucket is opened or closed.

20. In a bucket, the combination with two bucket segments, of a weighted member to which said segments are pivoted to turn about different axes, and means to open and close the bucket.

21. In a bucket, the combination with two bucket segments, of a member towhich the bucket segments are pivoted, gearing connecting the bucket segments, and means independent from said gearing to open and close the bucket.

22. In a bucket, the combination with two bucket segments, each having rigid therewith an arm extending upwardly therefrom, of a member to which the arms of the bucket segments are pivoted, and gearing connecting the arms.

23. In a bucket, the combination with two bucket segments, each having rigid therewith an upwardly-extending arm, of a weight member to which the arms are pivoted, each arm having at its upper end gear teeth inter-meshing with the gear teeth of the adjacent arm.

24. In a bucket, the combination with two bucket segments, each having upwardly-extending arms, a weight member having at its'end two trunnions on which the arms are pivoted, and a bushing member-lining the aperture of each arm provided with gear teeth to intermesh with corresponding gear teeth associated with the adjacent arm.

25. In a bucket, the combination with a head, of two bucket segments having up- 'ardlyextending arms, a weight member to which said arms are pivoted, links connecting the bucket segments with the head, said links having intermeshing engagement at their upper ends, and gearing connecting the arms, of the tW-L bucket segments.

' ried thereby,

and-closing rope mounted on said pm, said- 26. In a bucket, the combination with a sheave-receiving member and two removable .trunnions carried thereby at each end thereof, of two bucket segments pivoted to said trunnions, and sheaves for the opening-andclosing rope carried by said member.

27 In a bucket, the combination with two bucket segments, of a member having at each end two removable trunnions on which the bucket segments are pivoted.

28. In a bucket, the combination with two bucket segments, of a sheave receiving member to which the bucket segments are pivoted, sheaves for the opening-and-closing rope sustained in said member, said sheaves bein capable of removal without disconnecting the bucket segments from said member.

J 29. In a bucket, the combination with two bucket segments, of a sheave-receiving member, trunnions carried thereby on which the bucket segments are pivoted, a pivotal pin separate from the trunnions and also earned thereby,'and sheaves for theopening-andclosin rope mounted on said' in.

30. n a bucket, the combination with two bucket segments, of a sheave-receiving member, trunnions carried thereby on which the bucket segments are pivoted, a pivoted pin separate from the trunnions and also carand sheavesfor the openingpin being capable of withdrawal to permit the sheaves to be removed without dist-urbing the trunnions.

31.. In abucket, the combination with two bucket segments of a sheave-receiving mem ber to which said segments are separately pivoted, sheaves in said member, a head to which the bucket segments are pivotally con.- nected, and sheaves in the head having an angular relation to those in the sheave-receiving member. I

gearing connecting said arm,

for maintaining the hea head in vertical 32. In a bucket, the combination with two bucket segments of a weight to whichthe seg rents are pivoted to turn about dlfierent axes, a head to which the buckets are also pivotally connected, sheaves in the weight. other sheaves in the head having an angularelation to those in the ing-and-closing rope sheaves.

33. In a bucket, the combination with two bucket segments each having an arm extending upwarc'y therefrom of a wei ht to which the arms of the bucket are pivoted,

a head pivotpasslng a ound sat-1,

weight, and an ope?-- ally connected to the bucket segments,

sheaves in the head, and other sheaves in the weight, the former sheaves having an angular relation to the latter. 34. In a bucket, the combination with two bucket segments, of a head, links connecting said head with said so ments, and means (I in vertical post--- tlon.

3.5. In a' bucket, the combination with two bucket segments, of a head, links connecting said head with saidsegments, and means as sociated with the links formaintaining the position as the bucket is opened and closed.

36. In a bucket, the combination with a head, of a sheave-receiving member, two

bucket segments pivoted thereto to turn about different axes, sheaves .sustained by said head, other sheaves sustained by said sheave-receiving member, and an opening and closing rope passing about said sheaves.

In testimony whereof, I have signed my name to this specification, two subscribing witnesses.

Witnesses:

LOUIS 0. SMITH, MARGARET A. DUNN.

Copies of this patent maybe obtained for five cents each, by a f Washington, D. 0.

addressing the Commissioner of Patents,

. ALMON E. NORRIS.

so in the presence of 

